{"raw_statement":[{"iden":"problem statement","content":"Joisino wants to evaluate the formula \"$A$ $op$ $B$\". Here, $A$ and $B$ are integers, and the binary operator $op$ is either `+` or `-`. Your task is to evaluate the formula instead of her."},{"iden":"constraints","content":"*   $1≦A,B≦10^9$\n*   $op$ is either `+` or `-`."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$A$ $op$ $B$"},{"iden":"sample input 1","content":"1 + 2"},{"iden":"sample output 1","content":"3\n\nSince $1 + 2 = 3$, the output should be $3$."},{"iden":"sample input 2","content":"5 - 7"},{"iden":"sample output 2","content":"\\-2"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}